US4702790A - Fuel filter apparatus and the method of manufacture - Google Patents

Fuel filter apparatus and the method of manufacture Download PDF

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Publication number
US4702790A
US4702790A US06/734,387 US73438785A US4702790A US 4702790 A US4702790 A US 4702790A US 73438785 A US73438785 A US 73438785A US 4702790 A US4702790 A US 4702790A
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United States
Prior art keywords
housing
glue
cover
filter element
receiving means
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Expired - Fee Related
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US06/734,387
Inventor
Josef Hogh
Hans Schacht
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Robert Bosch GmbH
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Robert Bosch GmbH
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D27/00—Cartridge filters of the throw-away type
    • B01D27/04—Cartridge filters of the throw-away type with cartridges made of a piece of unitary material, e.g. filter paper
    • B01D27/06—Cartridge filters of the throw-away type with cartridges made of a piece of unitary material, e.g. filter paper with corrugated, folded or wound material
    • B01D27/07—Cartridge filters of the throw-away type with cartridges made of a piece of unitary material, e.g. filter paper with corrugated, folded or wound material having a coaxial stream through the filtering element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D27/00—Cartridge filters of the throw-away type
    • B01D27/08—Construction of the casing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
    • B29C66/1312—Single flange to flange joints, the parts to be joined being rigid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/32—Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
    • B29C66/322—Providing cavities in the joined article to collect the burr
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B29C66/542—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles joining hollow covers or hollow bottoms to open ends of container bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
    • B29C65/4815—Hot melt adhesives, e.g. thermoplastic adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis

Definitions

  • the present invention relates to a filter for refining fluids, particularly fuels or oils.
  • Known filters of the foregoing type include a housing in which a wound filter element is accommodated, the housing being comprised of a cup-shaped main portion and a housing cover. Both housing portions, which are separated from each other to form a contaminated side and a filtered or clean side, are connected to each other and to the filter element inserted in the housing at a single ring-shaped glue location.
  • An additional anchoring is provided by flanging of the edge of the main housing portion.
  • the disadvantage of such a filter resides in that only housing portions of metal and a hot melting adhesive or glue could be used with the single glue location or spot.
  • hot melting glue can not be utilized with the housing made of plastics.
  • a filter for filtering fluids comprising a housing including two housing portions; a filter element accommodated in the housing, and glue-accommodating means separating a contaminated side in said housing from a clean side and receiving glue for connecting said two housing portions to each other and to said filter element, said housing portions being both formed of plastics, said glue receiving means being ring-shaped, one of said housing portions having at an inner side thereof in the region of said glue-receiving means an extension which forms an annular pocket which is open to the other of said housing portions, the other of said housing portions being formed with a collar conforming to and extending into said pocket and partially filling said pocket, said filter element having a peripheral surface, said collar together with said extension forming an annular gap limited at said peripheral surface, said annular gap forming said glue-receiving means.
  • a single glue location has two tightly formed connections for a filter medium, namely the connection between the contaminated side and the filtered or clean side and the connection between two housing portions. Therefore cold hardenable glue can be used with this glue-accommodating means.
  • the flowing ability, as well as the dosage of the glue used, can be controlled so that an inexpensive and rational manufacture of the filter be possible. If the filter is utilized for purging benzene or diesel fuel the specific shape of the glue-accommodating means significantly reduces the danger that the glue would swell up under the influence of the fuel and thereby stress in the glue connection would be prevented.
  • Both housing portions in the region of said glue-receiving means may abut against said peripheral surface and limit together with the same said annular gap.
  • the gap may have at least one axially extending portion which leads to said pocket, and a radially extending portion which leads to said peripheral surface, said axially extending portion merging into said radially extending portion.
  • Said extension and said collar may each have in the region of said peripheral surface an oblique surface so that said annular gap is enlarged towards said peripheral surface.
  • One of said housing portions may be a cup-shaped housing and the other of said portions may be a cover.
  • the filter element may be a wound filter element.
  • the housing portions may have rims spaced from the glue-receiving means and being welded to each other.
  • the gap may have another axially extending portion which is in connection with said at least one axially extending portion via said radially extending portion.
  • a method of manufacturing a fluid filter including a housing having two housing portions, a wound filter element accommodated in the housing and glue-receiving means for receiving glue for connecting the two housing portions to each other and to the filter element, and wherein one of said housing portions has a pocket and another of said housing portions has a collar, the method comprising the steps of inserting the filter element into one of said portions, filling said pocket at least partially with flowable glue, mounting the other of said housing portions on the one of said portions so that said collar is partially inserted into said pocket and displaces the glue therefrom whereby an annular gap is formed between said housing portion in which the glue is received so that, after solidifying of the glue, said two portions and said filter element are rigidly and tightly connected to each other.
  • FIG. 1 is a side view, partially in section, of the filter according to the invention.
  • FIG. 2 is a partial sectional view through the filter in accordance with a modified embodiment of the invention.
  • reference numeral 10 designates a fuel filter which has a housing 11 comprised of a cup-shaped housing portion 2 and a housing cover 13 which closes the portion 12. Both portions of housing 11 are made of plastics.
  • a plurality of feeding openings 14 are annularly distributed in the housing cover 13 whereas a single discharge opening 15 provided with a thread is centrally positioned in the cover.
  • a filter element 16 interconnected between the feeding openings 14 and the discharge opening 15 is accommodated in the housing 11.
  • Filter element 16 is formed as a conventional wound filter element.
  • the filter element 16 has a central tube 17 which is supported via a flat seal ring 18 against the housing cover 13 at the one end and against a bottom 19 of the housing portion 12 at the other end.
  • the main housing portion 12 has a first cylindrical section 21 upwardly extending from the bottom 19, which section merges via a ledge 22 into a second enlarged cylindrical section 23 which in turn merges into a radially extended edge or rim 24.
  • the first cylindrical section 21 has an extension or collar 25 which projects beyond ledge 22 and is ring-shaped. Collar or extension 25 forms together with ledge 22 and the second cylindrical section 23 a pocket 26 which is also ring-shaped. The height of pocket 26 is selected so that it determines at least a double wall thickness of the housing portion 12.
  • the housing cover 13 is set on the housing portion 12 so that an outer peripheral rim 27 of the cover comes into contact with the edge 24 of the housing portion 12.
  • the housing cover further has an axially protruding annular collar 28, by means of which the cover 13 is aligned in the cylindrical section 23 of housing portion 12.
  • Collar 28 has a ring-shaped, strip-like projection 29 which extends into the pocket 26 and forms therein a circular gap 31 of substantially Z-shape cross-section.
  • This circular gap 31 has an axially projecting portion 32 concentrical with the axis of elongation of filter 10 and a radially projecting portion 33 which leads to a peripheral surface 34 of the filter element 16.
  • Respective oblique surfaces 35 and 36 are provided on the collar 28 and extension 25 so that the radially extending portion 33 of the ring-shaped gap 31 is enlarged towards the filter element 16 to form a conical portion.
  • the inner diameter of collar 28 is manufactured precisely so as to correspond to the inner diameter of the portion 21 of housing 12 so that the peripheral surface 34 of filter element 16 would abut in assembly against both housing portions 12 and 13.
  • the ring-shaped gap 31 which is limited by both housing portions 12 and 13 and by the filter element 16 is filled with glue.
  • glue a cold hardenable adhesive or glue is utilized herein, which after solifying will sealingly and rigidly connect both housing portions 12, 13, and also the filter element, 16 to each other.
  • the filter element 16 is slidably inserted into the first cylindrical portion 21 of housing 12. Then a cold hardenable adhesive 37 is placed into pocket 26 which is open from above. The flow of the adhesive or glue and its dosing can be easily controlled. Then the cover 13 is inserted into the main housing portion 12 and pressed against the latter until edges 24 and 27 abut against each other. Upon pressing of the housing cover 13 the ring-shaped projection 29 of collar 28 extends into the pocket 31 and dislodge the glue in the ring-shaped gap 31 whereby the glue will flow in the inward direction towards the filter element 16. The solidified glue within the gap 31 forms a rigid and tight anchoring of the both housing portions 12, 13 and the wound filter element 16. Due to a specific chamber or recess for the accommodation of the glue in the gap 31 aggressive fuel to be filtered can affect the glue 37 only to a limited degree so that swellings and inner stresses connected therewith would be avoided in the glue connection.
  • edges 24 and 27 of the housing portions 12 and 13 made of plastics can be welded to each other.
  • the illustrated filter 10 provides that in the housing 11 formed of synthetic plastic material a glue-accommodating gap between the housing portions 12, 13 and the filter element 16 can be produced in a very simple and rational manner. Thus the glue accommodating spot would satisfy requirements to the plastic filter in operation.
  • FIG. 2 illustrates another embodiment of this invention
  • Reference numeral 40 denotes the filter in toto.
  • the like reference numerals for identifying structural components similar to those of FIG. 1 will be utilized for the description of the embodiment of FIG. 2.
  • Filter 40 differs from the filter of FIG. 1 in that the Z-shaped annular gap 31 is formed, having a second axial portion 41.
  • the ring-shaped, axially extending portion 41 projects from the radial portion formed at the step or ledge 23 beyond the pocket 26 upwardly and up to a conical surface 42 which serves the purpose of centering the cover 13 in the housing portion 12.
  • Both housing portions 12, 13 are rigidly connected to each other by the glue solidified in the gap 31 also extended at the second cylindrical portion 41 so that an additional welding of edges 24 and 27 to each other can be omitted. Edges 24, 27 therefore would have only a centering function.
  • the invention is not limited to these two embodiments.
  • the shapes of pocket 26 and collar 28 can be modified taking into consideration, however that glue must be radially concentrated on the wound filter element 16.
  • glue must be radially concentrated on the wound filter element 16.
  • a different type of the filter can be used.
  • the wound filter element is particularly advantageous for this type of the filter other filter elements can be employed, which would permit the chamber-like gap for accommodating the glue.

Abstract

A fuel filter includes a housing made of plastics and having a main housing portion accommodating a filter element, and a cover. The housing portions are tightly connected to each other at a single ring-shaped glue spot. The housing portion is formed with a pocket filled with glue and the cover is formed with a collar partially projecting into the pocket to form an annular Z-shaped gap in which the glue is distributed. When the glue is solidified the housing and the cover become rigidly and tightly connected to each other. The shape of the gap protects the glue against aggressive fuel.

Description

BACKGROUND OF THE INVENTION
The present invention relates to a filter for refining fluids, particularly fuels or oils.
Known filters of the foregoing type, one of which is disclosed in DE-OS No. 2,547,857, include a housing in which a wound filter element is accommodated, the housing being comprised of a cup-shaped main portion and a housing cover. Both housing portions, which are separated from each other to form a contaminated side and a filtered or clean side, are connected to each other and to the filter element inserted in the housing at a single ring-shaped glue location.
An additional anchoring is provided by flanging of the edge of the main housing portion. The disadvantage of such a filter resides in that only housing portions of metal and a hot melting adhesive or glue could be used with the single glue location or spot. However, hot melting glue can not be utilized with the housing made of plastics.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide an improved fluid filter, particularly a filter for purging fuel or oil.
It is another object of this invention to provide a simple, fluid-tight glueing of the housing portions of plastics to each other and to the filter element.
These and other objects of the invention are attained by a filter for filtering fluids, particularly fuels and oils, comprising a housing including two housing portions; a filter element accommodated in the housing, and glue-accommodating means separating a contaminated side in said housing from a clean side and receiving glue for connecting said two housing portions to each other and to said filter element, said housing portions being both formed of plastics, said glue receiving means being ring-shaped, one of said housing portions having at an inner side thereof in the region of said glue-receiving means an extension which forms an annular pocket which is open to the other of said housing portions, the other of said housing portions being formed with a collar conforming to and extending into said pocket and partially filling said pocket, said filter element having a peripheral surface, said collar together with said extension forming an annular gap limited at said peripheral surface, said annular gap forming said glue-receiving means.
In the filter of this invention a single glue location has two tightly formed connections for a filter medium, namely the connection between the contaminated side and the filtered or clean side and the connection between two housing portions. Therefore cold hardenable glue can be used with this glue-accommodating means. The flowing ability, as well as the dosage of the glue used, can be controlled so that an inexpensive and rational manufacture of the filter be possible. If the filter is utilized for purging benzene or diesel fuel the specific shape of the glue-accommodating means significantly reduces the danger that the glue would swell up under the influence of the fuel and thereby stress in the glue connection would be prevented.
Both housing portions in the region of said glue-receiving means may abut against said peripheral surface and limit together with the same said annular gap.
The gap may have at least one axially extending portion which leads to said pocket, and a radially extending portion which leads to said peripheral surface, said axially extending portion merging into said radially extending portion.
Said extension and said collar may each have in the region of said peripheral surface an oblique surface so that said annular gap is enlarged towards said peripheral surface.
One of said housing portions may be a cup-shaped housing and the other of said portions may be a cover.
The filter element may be a wound filter element.
The housing portions may have rims spaced from the glue-receiving means and being welded to each other.
The gap may have another axially extending portion which is in connection with said at least one axially extending portion via said radially extending portion.
The objects of the invention are further attained by a method of manufacturing a fluid filter including a housing having two housing portions, a wound filter element accommodated in the housing and glue-receiving means for receiving glue for connecting the two housing portions to each other and to the filter element, and wherein one of said housing portions has a pocket and another of said housing portions has a collar, the method comprising the steps of inserting the filter element into one of said portions, filling said pocket at least partially with flowable glue, mounting the other of said housing portions on the one of said portions so that said collar is partially inserted into said pocket and displaces the glue therefrom whereby an annular gap is formed between said housing portion in which the glue is received so that, after solidifying of the glue, said two portions and said filter element are rigidly and tightly connected to each other.
The novel features which are considered as characteristic for the invention are set forth in particular in the appended claims. The invention itself, however, both as to its construction and its method of operation, together with additional objects and advantages thereof, will be best understood from the following description of specific embodiments when read in connection with the accompanying drawing.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a side view, partially in section, of the filter according to the invention; and
FIG. 2 is a partial sectional view through the filter in accordance with a modified embodiment of the invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring now to the drawings in detail, and firstly to FIG. 1 thereof, reference numeral 10 designates a fuel filter which has a housing 11 comprised of a cup-shaped housing portion 2 and a housing cover 13 which closes the portion 12. Both portions of housing 11 are made of plastics.
A plurality of feeding openings 14 are annularly distributed in the housing cover 13 whereas a single discharge opening 15 provided with a thread is centrally positioned in the cover. A filter element 16 interconnected between the feeding openings 14 and the discharge opening 15 is accommodated in the housing 11. Filter element 16 is formed as a conventional wound filter element. The filter element 16 has a central tube 17 which is supported via a flat seal ring 18 against the housing cover 13 at the one end and against a bottom 19 of the housing portion 12 at the other end.
The main housing portion 12 has a first cylindrical section 21 upwardly extending from the bottom 19, which section merges via a ledge 22 into a second enlarged cylindrical section 23 which in turn merges into a radially extended edge or rim 24. The first cylindrical section 21 has an extension or collar 25 which projects beyond ledge 22 and is ring-shaped. Collar or extension 25 forms together with ledge 22 and the second cylindrical section 23 a pocket 26 which is also ring-shaped. The height of pocket 26 is selected so that it determines at least a double wall thickness of the housing portion 12.
The housing cover 13 is set on the housing portion 12 so that an outer peripheral rim 27 of the cover comes into contact with the edge 24 of the housing portion 12. The housing cover further has an axially protruding annular collar 28, by means of which the cover 13 is aligned in the cylindrical section 23 of housing portion 12. Collar 28 has a ring-shaped, strip-like projection 29 which extends into the pocket 26 and forms therein a circular gap 31 of substantially Z-shape cross-section. This circular gap 31 has an axially projecting portion 32 concentrical with the axis of elongation of filter 10 and a radially projecting portion 33 which leads to a peripheral surface 34 of the filter element 16. Respective oblique surfaces 35 and 36 are provided on the collar 28 and extension 25 so that the radially extending portion 33 of the ring-shaped gap 31 is enlarged towards the filter element 16 to form a conical portion. The inner diameter of collar 28 is manufactured precisely so as to correspond to the inner diameter of the portion 21 of housing 12 so that the peripheral surface 34 of filter element 16 would abut in assembly against both housing portions 12 and 13.
The ring-shaped gap 31 which is limited by both housing portions 12 and 13 and by the filter element 16 is filled with glue. Thereby a cold hardenable adhesive or glue is utilized herein, which after solifying will sealingly and rigidly connect both housing portions 12, 13, and also the filter element, 16 to each other.
For the assembling of filter 10, made of plastics, the filter element 16 is slidably inserted into the first cylindrical portion 21 of housing 12. Then a cold hardenable adhesive 37 is placed into pocket 26 which is open from above. The flow of the adhesive or glue and its dosing can be easily controlled. Then the cover 13 is inserted into the main housing portion 12 and pressed against the latter until edges 24 and 27 abut against each other. Upon pressing of the housing cover 13 the ring-shaped projection 29 of collar 28 extends into the pocket 31 and dislodge the glue in the ring-shaped gap 31 whereby the glue will flow in the inward direction towards the filter element 16. The solidified glue within the gap 31 forms a rigid and tight anchoring of the both housing portions 12, 13 and the wound filter element 16. Due to a specific chamber or recess for the accommodation of the glue in the gap 31 aggressive fuel to be filtered can affect the glue 37 only to a limited degree so that swellings and inner stresses connected therewith would be avoided in the glue connection.
In order to enhance resistance to pressure both edges 24 and 27 of the housing portions 12 and 13 made of plastics can be welded to each other.
The illustrated filter 10 provides that in the housing 11 formed of synthetic plastic material a glue-accommodating gap between the housing portions 12, 13 and the filter element 16 can be produced in a very simple and rational manner. Thus the glue accommodating spot would satisfy requirements to the plastic filter in operation.
FIG. 2 illustrates another embodiment of this invention Reference numeral 40 denotes the filter in toto. The like reference numerals for identifying structural components similar to those of FIG. 1 will be utilized for the description of the embodiment of FIG. 2. Filter 40 differs from the filter of FIG. 1 in that the Z-shaped annular gap 31 is formed, having a second axial portion 41. The ring-shaped, axially extending portion 41 projects from the radial portion formed at the step or ledge 23 beyond the pocket 26 upwardly and up to a conical surface 42 which serves the purpose of centering the cover 13 in the housing portion 12. Both housing portions 12, 13 are rigidly connected to each other by the glue solidified in the gap 31 also extended at the second cylindrical portion 41 so that an additional welding of edges 24 and 27 to each other can be omitted. Edges 24, 27 therefore would have only a centering function.
It is of course understood that the invention is not limited to these two embodiments. For example, the shapes of pocket 26 and collar 28 can be modified taking into consideration, however that glue must be radially concentrated on the wound filter element 16. Instead of requiring the flowing of the fluid being filtered through the filter 10 a different type of the filter can be used. Although the wound filter element is particularly advantageous for this type of the filter other filter elements can be employed, which would permit the chamber-like gap for accommodating the glue.
It will be understood that each of the elements described above, or two or more together, may also find a useful application in other types of fluid refining filters differing from the types described above.
While the invention has been illustrated and described as embodied in a filter for purging fluids, it is not intended to be limited to the details shown, since various modifications and structural changes may be made without departing in any way from the spirit of the present invention.
Without further analysis, the foregoing will so fully reveal the gist of the present invention that others can, by applying current knowledge, readily adapt it for various applications without omitting features that, from the standpoint of prior art, fairly constitute essential characteristics of the generic or specific aspects of this invention.

Claims (5)

What is claimed as new and desired to be protected by Letters Patent is set forth in the appended claims.
1. A filter for filtering fuels, comprising a cup-shaped housing; a cover closing said housing; a wound filter element accomodated in said housing; and glue-receiving means separating a contaminated side in said housing from a clean side and receiving glue for connecting said housing and said cover to each other and to said filter element, said housing and said cover being both formed of plastics, said glue-receiving means being ring-shaped, said housing having, at an inner side thereof, in the region of said glue-receiving means an extension which forms an annular pocket which is open to said cover, said cover being formed with a collar conforming to and extending into said pocket and partially filling said pocket, said filter element having a peripheral surface, said collar together with said extension forming an annular gap limited at said peripheral surface, said annular gap forming said glue-receiving means; said housing and said cover in the region of said glue-receiving means abutting against said peripheral surface and limiting together with the same said annular gap, said gap having at least one axially extending portion in said pocket and a radially extending portion which leads to said peripheral surface, said axially extending portion merging into said radially extending portion so that said housing, said cover, said filter element and said annular gap when filled with glue form an entire sealed assembly in the region of said glue-receiving means.
2. The filter as defined in claim 1, wherein said extension and said collar each has in the region of said peripheral surface an oblique surface so that said annular gap is enlarged towards said peripheral surface.
3. The filter as defined in claim 2, wherein said gap has another axially extending portion which is in connection with said at least one axially extending portion via said radially extending portion.
4. The filter as defined in claim 1, wherein said housing and said cover have rims spaced from said glue-receiving means and being welded to each other.
5. A method of manufacturing a fuel filter including a plastic housing having a cover, a wound filter element accommodated in the housing and glue-receiving means for receiving means for receiving glue for connecting the housing and the cover to each other and to the filter element, and wherein one of said housing and the cover has a pocket and another of said housing and the cover has a collar, the method comprising the steps of inserting the wound filter element into one of said housing and the cover, filling said pocket at least partially with flowable glue, mounting the other of said housing and the cover on the one of said housing and the cover so that said collar is partially inserted into said pocket and displaces the glue therefrom whereby an annular gap is formed betweeen said housing and said cover, in which the glue is received so that after solidifying of the glue, said housing and the cover and said filter element are rigidly and tightly connected to each other and form together with said annular gap when filled with glue an entire sealed assembly in the region of said glue-receiving means.
US06/734,387 1984-07-10 1985-05-14 Fuel filter apparatus and the method of manufacture Expired - Fee Related US4702790A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3425347 1984-07-10
DE19843425347 DE3425347A1 (en) 1984-07-10 1984-07-10 FILTER TO CLEAN LIQUIDS

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GB2220866A (en) * 1988-07-22 1990-01-24 Gilardini Spa Filter
US4913813A (en) * 1988-12-08 1990-04-03 Gilbarco Inc. Filter spill prevention cover
US4919987A (en) * 1987-01-15 1990-04-24 Verwaltungsgesellschafft Geiger Plastic GmbH & Co. KG Process for the joining of polyamide parts by friction welding
US4948503A (en) * 1987-11-04 1990-08-14 Ing. Walter Hengst Gmbh & Co. Kg Oil filter cover in combination with an oil filter cartridge
US5188731A (en) * 1990-10-04 1993-02-23 Lapoint Jr John Filter apparatus with a flexible collar
US5667678A (en) * 1995-04-13 1997-09-16 Advanced Performance Technology, Inc. Plastic fluid filter and method for assembling same
US5817234A (en) * 1995-04-13 1998-10-06 Advanced Performance Technology, Inc. Fluid filter and method for assembling same
US6651823B1 (en) 2000-05-15 2003-11-25 Honeywell International Inc. Plastic filter housing formed from multiple sections and having a skewed weld seam, and filter incorporating same
US20040031745A1 (en) * 2000-10-18 2004-02-19 Argo Gmbh Fuer Fluidtechnik Filter device
US6832785B1 (en) * 2003-07-21 2004-12-21 Itt Manufacturing Enterprises, Inc. Spin welded fluid coupling
US20050067335A1 (en) * 2003-09-26 2005-03-31 Sung-Hak Kim Sealing apparatus of fuel filter
US20080149550A1 (en) * 2006-12-20 2008-06-26 Carlos Del Pino Suarez Filter fuel assembly
GB2426723B (en) * 2005-05-28 2010-11-17 Intersurgical Ag Improvements relating to filters
CN103505934A (en) * 2012-06-18 2014-01-15 曼+哈梅尔滤清器有限责任公司 Laser welded spin-on type lube filter
US20150101293A1 (en) * 2013-02-04 2015-04-16 Mann+Hummel Gmbh Cup-shaped Housing, Device for Separating Liquid from Air, and Method for Mounting the Cup-shaped Housing on a Nipple
US10010816B2 (en) 2014-03-03 2018-07-03 Fsp Fluid Systems Partners Holding Ag Filter device for filtering a hydraulic fluid
US10071329B2 (en) 2014-09-17 2018-09-11 Toyota Boshoku Kabushiki Kaisha Air cleaner
CN109480642A (en) * 2018-12-04 2019-03-19 福建滤冠新型材料科技有限公司 A kind of kettle scale inhibition piece

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JPH08909U (en) * 1991-11-08 1996-06-07 洋志 杉下 Incinerator oil filter
DE102011120453A1 (en) 2011-12-07 2013-06-13 Robert Bosch Gmbh Filter cartridge for separating particles from fluid, has housing cover including external connection surface with sealing receiver and including annularly extended groove in which end section of filter element is received

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US4021342A (en) * 1974-10-23 1977-05-03 Robert Bosch G.M.B.H. Liquid filter
DE2547857A1 (en) * 1975-10-25 1977-05-05 Bosch Gmbh Robert Cartridge filter unit construction - using thermoplastic adhesive to seal element to casing and top cover to casing
US4056876A (en) * 1975-10-25 1977-11-08 Robert Bosch Gmbh Method of making a filter
US4219426A (en) * 1976-03-19 1980-08-26 Organon Teknika B.V. Dialysis device
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Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4919987A (en) * 1987-01-15 1990-04-24 Verwaltungsgesellschafft Geiger Plastic GmbH & Co. KG Process for the joining of polyamide parts by friction welding
US4948503A (en) * 1987-11-04 1990-08-14 Ing. Walter Hengst Gmbh & Co. Kg Oil filter cover in combination with an oil filter cartridge
GB2220866A (en) * 1988-07-22 1990-01-24 Gilardini Spa Filter
FR2634521A1 (en) * 1988-07-22 1990-01-26 Gilardini Spa Exchangeable filter for liquid for supplying or lubricating an engine
GB2220866B (en) * 1988-07-22 1992-06-03 Gilardini Spa Disposable engine fuel or lubricating fluid filter
US4913813A (en) * 1988-12-08 1990-04-03 Gilbarco Inc. Filter spill prevention cover
US5188731A (en) * 1990-10-04 1993-02-23 Lapoint Jr John Filter apparatus with a flexible collar
US5667678A (en) * 1995-04-13 1997-09-16 Advanced Performance Technology, Inc. Plastic fluid filter and method for assembling same
US5817234A (en) * 1995-04-13 1998-10-06 Advanced Performance Technology, Inc. Fluid filter and method for assembling same
US6651823B1 (en) 2000-05-15 2003-11-25 Honeywell International Inc. Plastic filter housing formed from multiple sections and having a skewed weld seam, and filter incorporating same
US20040031745A1 (en) * 2000-10-18 2004-02-19 Argo Gmbh Fuer Fluidtechnik Filter device
US7094343B2 (en) * 2000-10-18 2006-08-22 Argo-Hytos Gmbh Filter device
US6832785B1 (en) * 2003-07-21 2004-12-21 Itt Manufacturing Enterprises, Inc. Spin welded fluid coupling
US20050067335A1 (en) * 2003-09-26 2005-03-31 Sung-Hak Kim Sealing apparatus of fuel filter
US7150825B2 (en) * 2003-09-26 2006-12-19 Hyundai Motor Company Sealing apparatus of fuel filter
GB2426723B (en) * 2005-05-28 2010-11-17 Intersurgical Ag Improvements relating to filters
US20080149550A1 (en) * 2006-12-20 2008-06-26 Carlos Del Pino Suarez Filter fuel assembly
US7857971B2 (en) * 2006-12-20 2010-12-28 Del Pino Suarez Carlos Filter fuel assembly
CN103505934A (en) * 2012-06-18 2014-01-15 曼+哈梅尔滤清器有限责任公司 Laser welded spin-on type lube filter
US20150101293A1 (en) * 2013-02-04 2015-04-16 Mann+Hummel Gmbh Cup-shaped Housing, Device for Separating Liquid from Air, and Method for Mounting the Cup-shaped Housing on a Nipple
US9248393B2 (en) * 2013-02-04 2016-02-02 Mann—Hummel Gmbh Cup-shaped housing, device for separating liquid from air, and method for mounting the cup-shaped housing on a nipple
US10010816B2 (en) 2014-03-03 2018-07-03 Fsp Fluid Systems Partners Holding Ag Filter device for filtering a hydraulic fluid
US10071329B2 (en) 2014-09-17 2018-09-11 Toyota Boshoku Kabushiki Kaisha Air cleaner
CN109480642A (en) * 2018-12-04 2019-03-19 福建滤冠新型材料科技有限公司 A kind of kettle scale inhibition piece

Also Published As

Publication number Publication date
DE3562560D1 (en) 1988-06-16
JPH0569565B2 (en) 1993-10-01
EP0167819B1 (en) 1988-05-11
EP0167819A1 (en) 1986-01-15
JPS6125614A (en) 1986-02-04
DE3425347A1 (en) 1986-01-16

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